Abstract : soil incubation experiments were conducted in lab to delineate the effect of soil temperature and soil water content on soil respirations in broad - leaved / korean pine forest ( mountain dark brown forest soil ), dark coniferous forest ( mountain brown coniferous forest soil ) and erman ' s birch forest ( mountain soddy forest soil ) in changbai mountain in september 2001. the soil water content was adjusted to five different levels ( 9, 21, 30, 37 and 43 ) by adding certain amount of water into the soil cylinders, and the soil sample was incubated at 0, 5, 15, 25 and 35 for 24 h the results indicated that in broad - leaved / korean pine forest the soil respiration rate was positively correlated to soil temperature from 0 to 35. soil respiration rate increased with increase of soil water content within the limits of 21 to 37, while it decreased with soil water content when water content was over the range. the result suggested the interactive effects of temperature and water content on soil respiration. there were significant differences in soil respiration among the various forest types. the soil respiration rate was highest in broad - leaved / korean pine forest, middle in erman ' s birch forest and the lowest in dark coniferous forest. the optimal soil temperature and soil water content for soil respiration was 35 and 37 in broad - leaved / korean pine forest, 25 and 21 in dark coniferous forest, and 35 and 37 in erman ' s birch forest. because the forests of broad - leaved / korean pine, dark coniferous and erman ' s birch are distributed at different altitudes, the soil temperature had 4 - 5 variation in different forest types during the same period. thus, the soil respiration rates measured in brown pine mountain soil were lower than those in dark brown forest and those measured in mountain grass forest soil were higher than those in brown pine mountain soil
文摘:為了研究土壤溫度和土壤含水量對闊葉紅松林(山地暗棕壤) 、雲冷
杉暗針葉林(山地棕針葉林土壤)和岳樺林(生草森林土)的土壤呼吸的影響,於2001年9月在長白山進行了土壤實驗.利用增加土壤樣柱的含水量,將土壤含水量分為9 , 、 21 、 30 、 37和43 5個等級,土壤樣品分別在0 、 5 、 15 、 25和35的溫度下保持24小時.闊葉紅松林土壤在0 ( 35范圍內,土壤呼吸速率與溫度呈正相關.在一定的含水量范圍內( 21 ( 37 ) ,土壤呼吸隨含水量的增加而升高,當含水量超出該范圍,土壤呼吸速率則隨含水量的變化而降低.土壤溫度和水分對土壤呼吸
作用存在明顯的交互
作用.不同森林類型土壤呼吸
作用強弱存在顯著差異,大小順序為闊葉紅松林>岳樺林>雲冷
杉暗針葉林.紅松闊葉林土壤呼吸
作用的最佳條件是土壤溫度35 ,含水量37 ;雲冷
杉暗針葉林下的山地棕色針葉土壤呼吸
作用的最佳條件是25 , 21 ;岳樺林土壤呼吸
作用的最佳條件是35 ,含水量37 .但是,由於長白山闊葉紅松林,雲冷
杉林和岳樺林處在不同的海拔帶上,同期不同森林類型土壤溫度各不相同,相差4 ~ 5 ,所以野外所測的同期的山地棕色針葉林土呼吸速率應低於暗棕色森林土呼吸速率,山地生草森林土呼吸速率應高於山地棕色針葉林土的呼吸速率.圖2表1參25
Soil incubation experiments were conducted in lab to delineate the effect of soil temperature and soil water content on soil respirations in broad - leaved / korean pine forest ( mountain dark brown forest soil ), dark coniferous forest ( mountain brown coniferous forest soil ) and ermans birch forest ( mountain soddy forest soil ) in changbai mountain in september 2001. the soil water content was adjusted to five different levels ( 9, 21, 30, 37 and 43 ) by adding certain amount of water into the soil cylinders, and the soil sample was incubated at 0, 5, 15, 25 and 35 for 24 h the results indicated that in broad - leaved / korean pine forest the soil respiration rate was positively correlated to soil temperature from 0 to 35. soil respiration rate increased with increase of soil water content within the limits of 21 to 37, while it decreased with soil water content when water content was over the range. the result suggested the interactive effects of temperature and water content on soil respiration. there were significant differences in soil respiration among the various forest types. the soil respiration rate was highest in broad - leaved / korean pine forest, middle in ermans birch forest and the lowest in dark coniferous forest. the optimal soil temperature and soil water content for soil respiration was 35 and 37 in broad - leaved / korean pine forest, 25 and 21 in dark coniferous forest, and 35 and 37 in ermans birch forest. because the forests of broad - leaved / korean pine, dark coniferous and ermans birch are distributed at different altitudes, the soil temperature had 4 - 5 variation in different forest types during the same period. thus, the soil respiration rates measured in brown pine mountain soil were lower than those in dark brown forest and those measured in mountain grass forest soil were higher than those in brown pine mountain soil
為了研究土壤溫度和土壤含水量對闊葉紅松林(山地暗棕壤) 、雲冷
杉暗針葉林(山地棕針葉林土壤)和岳樺林(生草森林土)的土壤呼吸的影響,於2001年9月在長白山進行了土壤實驗.利用增加土壤樣柱的含水量,將土壤含水量分為9 , 、 21 、 30 、 37和43 5個等級,土壤樣品分別在0 、 5 、 15 、 25和35的溫度下保持24小時.闊葉紅松林土壤在0 ( 35范圍內,土壤呼吸速率與溫度呈正相關.在一定的含水量范圍內( 21 ( 37 ) ,土壤呼吸隨含水量的增加而升高,當含水量超出該范圍,土壤呼吸速率則隨含水量的變化而降低.土壤溫度和水分對土壤呼吸
作用存在明顯的交互
作用.不同森林類型土壤呼吸
作用強弱存在顯著差異,大小順序為闊葉紅松林>岳樺林>雲冷
杉暗針葉林.紅松闊葉林土壤呼吸
作用的最佳條件是土壤溫度35 ,含水量37 ;雲冷
杉暗針葉林下的山地棕色針葉土壤呼吸
作用的最佳條件是25 , 21 ;岳樺林土壤呼吸
作用的最佳條件是35 ,含水量37 .但是,由於長白山闊葉紅松林,雲冷
杉林和岳樺林處在不同的海拔帶上,同期不同森林類型土壤溫度各不相同,相差4 ~ 5 ,所以野外所測的同期的山地棕色針葉林土呼吸速率應低於暗棕色森林土呼吸速率,山地生草森林土呼吸速率應高於山地棕色針葉林土的呼吸速率.圖2表1參25
Nci - h1155, a human non - small - cell lung cancer line, was employed in a paclitaxel - dependent synthetic lethal screen designed to identify gene targets that specifically reduce cell iability in the presence of otherwise sublethal concentrations of paclitaxel
Nci - h1155
作為一種人類非小細胞肺癌的種株,可運用其在依賴紫
杉醇殺傷性藥物合成過程中設計鑒別出靶基因,從而特異性減少未達到殺傷性致死量的紫
杉醇藥物
作用后腫瘤細胞仍存活的數量。
Through a translator, she told me that she had begun feeling sick the previous day. since she had symptoms of angina recurring chest pain due to lack of oxygen to the cardiac muscle, another fellow initiate physician administered nitroglycerine under her tongue a standard drug treatment for angina, an injection and oral drugs. a traditional chinese medical doctor also treated her with acupuncture and cupping therapy a method of applying suction cups to the skin to eliminate stagnant accumulation of toxins in the tissues
經由翻譯得知,她在前一天就開始生病了,由於有心絞痛的癥狀,一位從洛
杉磯來的醫師同修給了她舌下片及針劑治療,並給她口服的西藥,一位中醫師同修也為她
作針灸和撥罐療法,經過同修們的愛心治療后,她的胸痛情況已有改善。
" at this time, the la galaxy david beckham jersey is the no. 1 - selling shirt in the world. " while beckham ' s popularity with the fans appears to be soaring to new heights at the start of his american adventure, he is also making waves in tinseltown
小貝的人氣在他的「美國之旅」之初空前高漲,而與此同時,他在好萊塢tinseltown是洛
杉磯一處電影界名人經常露面的場所,常被用來指代好萊塢也開始了新動
作。
On the branches of the cedars were perched large eagles ; amid the foliage of the weeping willows were herons, solemnly standing on one leg ; and on every hand were crows, ducks, hawks, wild birds, and a multitude of cranes, which the japanese consider sacred, and which to their minds symbolize long life and prosperity
沒有一棵高大的
杉樹上沒有巨鷹的巢穴。沒有一棵垂楊柳的樹蔭下看不到象在憂郁沉思著的單足獨立的鷺鷥。這里到處都是小鳥野鴨山鷹和野雁,此外還有很多仙鶴,日本人把仙鶴當
作神鳥看待,認為仙鶴是長命富貴的象徵。
Englishmen were not concerned about the distinctions i was making in my own mind, between watts and “ south los angeles “, between watts and whittier
英國人對我在心裏就瓦茨與「南洛
杉礬」 ,瓦茨與惠蒂爾之間
作出的區別不以為然。
European spruce and maple for musical instruments. red cedar tops, mahogany, zebrawood and many more
製
作樂器的歐洲雲
杉和楓木,上等紅雪松,桃花心木,熱帶美洲產木材等等。
Shortly after the academy of motion picture arts and sciences was organized in 1927, a dinner was held in the crystal ballroom of the biltmore hotel in downtown los angeles to discuss methods of honouring outstanding achievements, thus encouraging higher levels of quality in all facets of motion picture production
電影藝術科學院於1927年剛剛成立后不久,在洛
杉磯巴爾的摩酒店的水晶舞廳舉行了一次宴會,討論如何獎勵電影製
作的傑出成就,以鼓勵電影製
作水平的全面提高。
" we are pretty confident, " said t. mark harrison, a ucla geochemist and co - author of one of the studies. " two studies conducted independently apparently have come to the same conclusion.
"我們相當有把握, "研究之一的加州大學洛
杉磯分校geochemist和合
作研究者。 " t .馬克harrison說。二項單獨地指導的研究明顯得到相同的結論.
David halberstam, a pulitzer prize - winning journalist and tireless author of books, was killed yesterday in a car crash south of san francisco
大衛哈爾伯斯坦于昨天在南洛
杉磯的一場車禍中去世。他是一位獲得普立茲獎的記者,也是一位孜孜不倦的
作家。
The main building was built in the late edo period. it has roofing made of thatch and the bark of the japanese cedar, and is also called " tiger - skin thatch " because it resembles the striped pattern of tiger skin
其主房建成於江戶時代後期,因其屋頂是由茅草和
杉樹皮修葺而成且酷似虎皮條文狀,故被稱
作虎皮葺。
British chart star lily allen has had her u. s. working visa revoked after being stopped at los angeles airport, according to media reports wednesday
周三媒體報道,英國明星莉莉?艾倫的工
作簽證被美國洛
杉磯機場宣告無效。
He lives in los angles and works in a magazine
他住在洛
杉機,在一家雜志社工
作。
He lives in los angeles and works at a magazine
他現在在洛
杉磯的一家雜志社工
作。
Effects of canopy interception on energy conversion processes in chinese fir plantation ecosystem
林冠截留在杉木林生態系統能量轉換過程中的作用